Fabric washer construction for crushing machinery and the like



Oct. 24, 1933. SYMQNS 1,931,633

FABRIC WASHER CONSTRUCTION FOR CRUSHING MACHINERY AND THE LIKE FiledMarch 6, 1930 iayarfijywww 5 @A/ZM mum Patented Oct. 24, 1933 STTESPATETOFFE FABRIC WASHER CONSTRUCTION FOR CRUSHING MACHINERY AND THE LIKEApplication March 6, 1930. Serial No. 433,565

8 Claims.

Iviy invention relates to securing .means and particularly to securingmeans adaptable for use for example with. the cone of a gyratory conecrusher. One object of myinvention is to provide clamping or lockingmeans for holding the mantle upon the cone of such a crusher and forpreventing the splitting or cracking of such mantle in response to rigiddownward pressure against the upper end thereof.

will appear from time to time-in the course of the specification andclaims.

I illustrate my invention more or less diagrammatically in theaccompanying drawing, wherein Figure is crusher;

T" ure 2 isa portion of a similar section, on an enlarged scale; and

Fi ure 3 a section on the line 3-3 of Figure 2.

, Like are indicated by like symbols throughout the specification anddrawing.

A generally indicates the frame of a gyratory cone crusher upon theupper flange or edge A of which may be seated the supporting ring A towhich is threaded the bowl supporting member A which may be formedintegrally with the bowl A A indicates any suitable liner for the bowl.B indicates an internal frame member 'or sleeve having the bearing 13 inwhich rotates the eccentric sleeve B eccentrically apertured as at B toreceive the downwardly tapered shaft gen-- 15 a vertical axial sectionthrough the erally indicated as C. B is a gear associated with thesleeveB whereby the eccentric sleeve may be rotated to impart a gyratorymovement to the shaft 0. B indicates an upwardly concave sphericalbearing member.

C is a crusher shaft having an upwardly tapered portion 0 and a furtherreduced portion C above it which, in turn, terminates in a screwthreadedportion 0 Mounted upon the tapered portion C is the cone proper 0 uponthe exterior surface of which, in turn, is positioned a mantle C whichmay, if desired, be formed of a plurality of individual annularsections.

D indicates a clamping member slidably mounted upon a cylindricalportion C of the shaft C. The member D terminates in a downward andoutward extension D adapted to engage the upper edge of the mantle C Itwill be understood that any thrust directed downwardly to and throughthe sleeve D is effective to thrust the mantle C downwardly against thecone C and to clamp the cone C downwardly upon the tapered portion 0 ofthe shaft C. The sleeve D includes a bearing portion D adapted tocontact Other objects the shaft portion C D indicates an upper recess orspaced away portion of the sleeve D, as shown for example in Figure 2.The member D terminates in an upper surface D which is shown, as inFigure 2, as somewhat upwardly and outwardly inclined.

Positioned above the sleeve D, and about the j I portion C of the shaftis the ring generally indicated as E, which includes an outer annularsection E and an inner cylindrical section E As shown in Figure 2 theinner cylindrical section E is formed to fit into the aperture D and isof such diameter as to penetrate between the upper portion of the memberD and the shaft portion C The annular portion E of the ring E has alower surface which is inclined downwardly and outthe compression of themember E against the member D these washers, or. the composite washermember formed thereby, is thicker at its inner than at its outerperiphery, the washer decreasing in thickness progressively outwardlyfrom the member E 1 It will be realized that whereas I have describedand shown a practical and operative device, nevertheless many changesmight be made in the size, shape, number and disposition of partswithout departing from the spirit of my invention. I therefore wish mydescription and drawing to be taken as in a broad sense illustrative anddiagrammatic rather than as limiting me to my specific showing. Inparticular whereas the washer here employed is well adapted for use withgyratory cone ,crushers, for the purpose of securing the mantle upon thecone, I do not wish to be limited specifically to such use, as manyother uses may be made of it without departing from the spirit of myinvention.

The use and operation of my invention are as follows:

In the type of cone'now upon the market, a rather widely flared cone isemployed, as shown in Figure 1. Upon the conic surface of this cone amantle is employed, such mantles being prevailingly of manganese steel.One characteristic of manganese is that it will flow and stretch underpressure, setting up strains in that part of the mantle which is notworking hard in response to the subjection of other variations of 'themantle to crushing strain. An example of such occurrence is when acrusher is set to produce a fine product, and the reduction for crushingtakes place in a restricted area of the crushing zone. Under suchconditions, and in response to the stretching or flowing of themanganese, cracks may develop even though the mantle is only partly wornout. Manganese has a tendency to stretch lengthwise as well as incircumference, when employed for such mantles. The mantle is held downon the head by means of the adjusting sleeve D and it is through thisadjusting sleeve that pressure is directed downwardly against the mantleand cone. I employ for example the nut H screwthreaded to thescrewthreaded portions C of the shaft. Rotation of the nut H directspressure downwardly against the ring E and through it against the sleeveD. Assume that the washers G are omitted. In such case the mantle isheld down on the cone by means of the adjusting sleeve and nut, andcannot yield in an upward direction. If the mantle then flows orstretches in response to crushing the above described tendency for themantle to crack will not be checked. I prefer, however, to interposesomewhere in the line of thrust, some yielding medium or member, toloosen the tendency for the mantle to crack and to provide some yield orgive in response to vertical stretchmg of the mantle. This is thefunction of the washer or washers G, which may be of any suitablecompressible or yieldable material. I may, for example, employ fiber orfabric washers formed of any suitable number of layers of fabric. Suchwashers may be employed for a considerable time without renewal, and maybe easily renewed when necessary. In practice, the employment of suchwashers has very much reduced the tendency of the mantles to split orcrack in service.

I claim:

1. In a crusher, a generally conic head, a shaft, said shaft extendingupwardly above the top of the conic head, a mantle mounted upon saidhead, said mantle being formed of a material adapted to extend inresponse to the crushing impacts to which it is subjected, and means forlocking said mantle upon said head, including a thrust member mountedupon said shaft, means for forcing said thrust member downwardly alongsaid shaft against said head and mantle, and a washer,- formed ofcompressible fibrous material, associated with said thrust member andadapted to compensate for the stretching or extension of the mantle, andmeans for confining said washer.

2. In a crusher, a generally conic head, a shaft, said shaft extendingupwardly above the top of the conic head, a mantle mounted upon saidsaid mantle being formed of a material adapted to extend in response tothe crushing impacts to which it is subjected, and means for lockingsaid mantle upon-said head, including a thrust member mounted upon'saidshaft, means for forcing s thrust member downwardly along said shaftagainst head and mantle, and a formed of compressible fibrous material,associated with said thrust member and adapted to compensate forthe'stretching or extension of the mantle. a

3. In a crusher, a generally conic head, a shaft, said shaft extendingupwardly above the top of the conic head, a mantle mounted upon saidhead, said mantle being formed of a material adapted to compensate forthe stretching or eX- I tension of the mantle.

d. In a crusher, a generally conic head, a mantle mounted upon saidhead, said mantle being of a material adapted to extend in response tothe crushing impacts to which it is subjected,

and means for securing said mantle upon said head, including a sleeveadapted to engage the upper edge of the mantle, means for thrusting saidsleeve downwardly against the upper edge of said mantle, and acompressible fibrous washer interposed between said sleeve and saidthrusting means.

5. In a crusher, a generally conic head, a mantle mounted upon saidhead, said mantle being of a material adapted to extend in response tothe crushing impacts to which it is subjected, and means for securingsaid mantle upon said head, including a sleeve adapted to engage theupper edge of the mantle, means for thrusting said sleeve downwardlyagainst the upper edge of mantle, and a plurality of super-posedcompressible washers interposed between said sleeve and said thrustingmeans.

6.11.1 a crusher, mantle mounted upon said head, said mantle be ing of amaterial adapted to extend in response to the crushing impacts to whichit is subjected, and means for securing said mantle upon said head,including a sleeve adapted to engage the upper edge of the mantle, meansfor thrusting said sleeve downwardly against the upper edge of saidmantle, and a plurality of compressible washers interposed between theupper portion of-said sleeve and the. means for directing downwardpressure thereagainst, and a contact member adapted to engage saidwashers, said member including an annular portion overlying the washers,and a cylindrical portion extending between said washers and theshaft.

'7 In a crusher, a generally conic head, a mantle mounted upon saidhead, said mantle being of a material adapted to extend in response tothe crushing impacts to which it is subjected, and means for securingsaid mantle upon said head, including a sleeve adapted to engage theupper edge of the mantle, means for thrusting said sleeve downwardlyagainst the upper edge of said mantle, and compressible fibre washermeans interposed between said sleeve and said thrusting means. I

8. In a crusher, a generally conic head, a mantle mounted uponsaidhead,said mantle bea generally conic head, a

lid

ing of a material adapted to extend in response to the crushing impactsto which it is subjected, and means for securing said mantle upon saidhead, including a sleeve adapted to engage the upper edge of the mantle,means for thrusting said sleeve downwardly against the upper edge ofsaid mantle, and compressible, fibre washer means interposed betweensaid sleeve and said thrusting means, said washer means being of greaterthickness at its inner than at its outer edge.

' EDGAR B. SYMONS.

